| Romeoville to Darby (Pennsylvania) | 681.39 mi (1,096.60 km) |
| Romeoville to Dardenne Prairie (Missouri) | 242.39 mi (390.09 km) |
| Romeoville to Darien (Illinois) | 9.89 mi (15.91 km) |
| Romeoville to Davenport (Iowa) | 129.57 mi (208.52 km) |
| Romeoville to Davidson (North Carolina) | 578.29 mi (930.67 km) |
| Romeoville to Davie (Florida) | 1,163.06 mi (1,871.77 km) |
| Romeoville to Davis (California) | 1,779.22 mi (2,863.37 km) |
| Romeoville to Dayton (Nevada) | 1,653.39 mi (2,660.87 km) |
| Romeoville to Dayton (Ohio) | 240.95 mi (387.77 km) |
| Romeoville to Daytona Beach (Florida) | 944.29 mi (1,519.69 km) |
| Romeoville to De Pere (Wisconsin) | 193.40 mi (311.24 km) |
| Romeoville to De Witt (New York) | 620.85 mi (999.16 km) |
| Romeoville to Dearborn (Michigan) | 255.36 mi (410.96 km) |
| Romeoville to Dearborn Heights (Michigan) | 252.17 mi (405.83 km) |
| Romeoville to DeBary (Florida) | 959.51 mi (1,544.19 km) |
